Improvement in envelopes



L. GIEBRICH..

` y Envelopes. N0. 143,!136. Patented September23,1873.

UNITED STATES HPATENT OFFICE,

LOUIS GIEBRIOH, OTTUMWA, IOWA.

IMPROVEMENT IN ENVELOPES.

Specification forming part of Letters Patent No. 143,136, datedSeptember 23, 1873; application filed August 23, 1873.

To all whom t may concern Be it known that I, Leurs GIEBEIGH, ofOttumwa, in the county of `VVapello and State of Iowa, have invented anew and valuable Improvement in Envelopes; and I do hereby declare thatthe following is a full, clear, and exa-ct description of theconstruction and operation of the same, reference being had to theannexed drawings making a part of this specification, and to the lettersand figures of reference marked thereon.

Figure l of the drawings is a representation of my envelope closed. Fig.2 is a view of my envelope, showing the form.

My invention consists in the construction and novel arrangement of anenvelope, whereby the contents of the same will be more secure than inthe ordinary envelopes, as will be hereinafter more fully set forth. a

Like letters of reference indicate corresponding parts.

A represents the main part of the envelope7 with the four main flaps B,B, O, and D. lhe flaps B B areat the ends of the main part A, and whenfolded their ends are glued together. rIhe flap C has in its center, atthe outer edge, a small flap, o., and at the fold of the flap O is aslit, b, as shown in Fig. 2. Theflap D has in the center, at the outeredge, a small flap, d, of such size that when the ilap D is folded thesmall ap d will pass through the slit b, Y and be folded over and pastedon the front of the main part A of the envelope. In the body of the HapD are cut two small flaps, f f, which,

when folded open, leave an opening, in which if so desired, which makesthe envelope more simple The main ila-ps B, B, O, and D may be of anydesired shape or outline.

What I claim as new, anddesire to secure by Letters Patent, is-.

An envelope formed of the usual main part A and four main iiaps, B, B,C, and D, and provided with the flaps a and f f, as shown and described,and for the purposes herein set forth.

In testimony that I claim the above I havey hereunto subscribed my namein the presence of two witnesses.

LOUIS GIEBRICH. Witnesses:

W. E. CHAMBERS, J oHN ERBAGHER.

